/* Reset & Base */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
    --bg: #f8f9fb;
    --sidebar-bg: #111318;
    --sidebar-text: #9ca3af;
    --sidebar-active: #ffffff;
    --primary: #4f6ef7;
    --primary-hover: #3b5ae0;
    --primary-light: #eef1fe;
    --success: #10b981;
    --success-light: #ecfdf5;
    --danger: #ef4444;
    --danger-light: #fef2f2;
    --warning: #f59e0b;
    --warning-light: #fffbeb;
    --text: #111827;
    --text-secondary: #4b5563;
    --text-muted: #9ca3af;
    --border: #e5e7eb;
    --border-light: #f3f4f6;
    --card-bg: #ffffff;
    --row-hover: #f8faff;
    --parent-row: #f0f4ff;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
    --shadow: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.07), 0 2px 4px -1px rgba(0,0,0,0.04);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.08), 0 4px 6px -2px rgba(0,0,0,0.04);
    --radius: 8px;
    --radius-sm: 6px;
    --radius-lg: 12px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
    font-size: 13.5px;
    line-height: 1.55;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    letter-spacing: -0.01em;
}

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

#app {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* Brand accent stripe */
body::before {
    content: '';
    display: block;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), #818cf8, var(--primary));
    z-index: 200;
}

/* Top navigation bar — light mode */
.topbar {
    background: #fff;
    color: var(--text);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    height: 56px;
    position: fixed;
    top: 3px;
    left: 0;
    right: 0;
    z-index: 100;
    border-bottom: 1px solid var(--border);
}

.topbar-left {
    display: flex;
    align-items: center;
    gap: 32px;
}

.topbar-logo {
    height: 28px;
}

.nav-links {
    list-style: none;
    display: flex;
    gap: 1px;
}

.nav-links li a {
    display: block;
    padding: 8px 14px;
    color: var(--text-muted);
    text-decoration: none;
    transition: all 0.15s;
    font-size: 13px;
    font-weight: 500;
    border-radius: 6px;
}

.nav-links li a:hover {
    color: var(--text);
    background: var(--bg);
}

.nav-links li a.active {
    color: var(--primary);
    background: var(--primary-light);
}

.topbar-right {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 12px;
    color: var(--text-muted);
}

/* Content */
.content {
    flex: 1;
    padding: 28px 32px;
    margin-top: 59px;
    min-height: calc(100vh - 59px);
}

/* Page transitions */
.content > * {
    animation: fadeIn 0.2s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(4px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Login */
.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    margin-top: 0 !important;
    background: linear-gradient(135deg, #1e1b4b 0%, #312e81 30%, #4338ca 60%, #4f6ef7 100%);
    position: relative;
}

.login-page::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 30% 20%, rgba(255,255,255,0.08) 0%, transparent 60%),
                radial-gradient(ellipse at 80% 80%, rgba(99,102,241,0.15) 0%, transparent 50%);
}

.login-card {
    background: var(--card-bg);
    padding: 44px;
    border-radius: var(--radius-lg);
    width: 400px;
    box-shadow: 0 25px 50px -12px rgba(0,0,0,0.25);
    position: relative;
    z-index: 1;
}

.login-card h1 {
    margin-bottom: 6px;
    font-size: 22px;
    font-weight: 600;
}

.login-card p {
    color: var(--text-muted);
    margin-bottom: 28px;
    font-size: 14px;
}

/* Forms */
.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 500;
    font-size: 13px;
    color: var(--text-secondary);
}

.form-group input, .form-group select, .form-group textarea {
    width: 100%;
    padding: 9px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 13.5px;
    transition: all 0.15s;
    background: #fff;
    color: var(--text);
}

.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(79,110,247,0.1);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 7px 15px;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.15s;
    text-decoration: none;
    letter-spacing: 0;
}

.btn-primary { background: var(--primary); color: #fff; box-shadow: 0 1px 2px rgba(79,110,247,0.3); transition: all 0.15s; }
.btn-primary:hover { background: var(--primary-hover); box-shadow: 0 4px 12px rgba(79,110,247,0.3); transform: translateY(-1px); }
.btn-success { background: var(--success); color: #fff; }
.btn-success:hover { background: #059669; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { background: #dc2626; }
.btn-outline { background: #fff; border: 1px solid var(--border); color: var(--text-secondary); }
.btn-outline:hover { background: var(--bg); border-color: #d1d5db; }
.btn-sm { padding: 4px 10px; font-size: 12px; }
.btn:disabled { opacity: 0.4; cursor: not-allowed; }

/* Page header */
.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
}

.page-header h1 {
    font-size: 20px;
    font-weight: 600;
    letter-spacing: -0.02em;
}

/* Cards */
.card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    margin-bottom: 16px;
    box-shadow: var(--shadow-sm);
    transition: box-shadow 0.2s;
}

.card:hover {
    box-shadow: var(--shadow);
}

.card h3 {
    font-size: 15px;
    font-weight: 600;
    letter-spacing: -0.01em;
}

/* Data Table */
.table-container {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: auto;
    box-shadow: var(--shadow-sm);
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
    table-layout: auto;
}

.table-container {
    overflow-x: auto;
}

.data-table th {
    background: #fafbfc;
    padding: 10px 14px;
    text-align: left;
    font-weight: 600;
    font-size: 11.5px;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--text-muted);
    border-bottom: 1px solid var(--border);
    white-space: nowrap;
    position: sticky;
    top: 0;
    cursor: pointer;
    user-select: none;
}

.data-table th:hover {
    color: var(--text-secondary);
    background: #f3f4f6;
}

.data-table td {
    padding: 10px 14px;
    border-bottom: 1px solid var(--border-light);
    vertical-align: middle;
    color: var(--text-secondary);
}

.sku-cell {
    white-space: nowrap;
}

.sku-cell a {
    white-space: nowrap;
}

.data-table tbody tr {
    transition: background 0.1s;
}

.data-table tbody tr:nth-child(even) td {
    background: #fafbfc;
}

.data-table tr:hover td {
    background: var(--row-hover) !important;
}

.data-table tr.parent-row td {
    color: var(--text);
    font-weight: 500;
}

.data-table tr.variant-row td:first-child {
    padding-left: 32px;
}

/* Row thumbnail (next to SKU) */
.row-thumb {
    width: 44px;
    height: 44px;
    object-fit: cover;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-light);
    display: block;
}

.row-thumb-empty {
    width: 48px;
    height: 48px;
    background: #fafafa;
    border-radius: 4px;
    border: 1px dashed #ddd;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' fill='none' stroke='%23ccc' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Crect x='3' y='3' width='18' height='18' rx='2'/%3E%3Ccircle cx='8.5' cy='8.5' r='1.5'/%3E%3Cpath d='M21 15l-5-5L5 21'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: center;
    background-size: 22px;
}

.thumb-cell {
    width: 60px;
    min-width: 60px;
    padding: 4px 8px !important;
    text-align: center;
}

/* Grid thumbnails (image columns) */
.grid-thumb {
    width: 56px;
    height: 56px;
    object-fit: cover;
    border-radius: 3px;
    border: 1px solid var(--border);
    display: block;
}

/* Taller rows when thumbnails are present */
.data-table tr .thumb-cell {
    vertical-align: middle;
}

/* Inline editing */
.data-table td.editing {
    padding: 2px 4px;
}

.data-table td.editing input {
    width: 100%;
    padding: 4px 8px;
    border: 2px solid var(--primary);
    border-radius: 3px;
    font-size: 13px;
}

/* Search bar */
.search-bar {
    display: flex;
    gap: 8px;
    margin-bottom: 16px;
    align-items: center;
}

.search-bar input {
    flex: 1;
    padding: 8px 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 13.5px;
    background: #fff;
    transition: all 0.15s;
}

.search-bar input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(79,110,247,0.08);
}

/* Pagination */
.pagination {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 16px;
    border-top: 1px solid var(--border-light);
    background: #fafbfc;
    font-size: 12px;
    color: var(--text-muted);
    border-radius: 0 0 var(--radius) var(--radius);
}

.pagination-buttons {
    display: flex;
    gap: 6px;
}

/* Badge */
.badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 0;
}

.badge-parent { background: var(--primary-light); color: var(--primary); }
.badge-variant { background: var(--success-light); color: var(--success); }
.badge-new { background: var(--success-light); color: var(--success); }
.badge-update { background: var(--warning-light); color: #b45309; }
.badge-unchanged { background: #f3f4f6; color: var(--text-muted); }

/* Tabs */
.tabs {
    display: flex;
    gap: 0;
    border-bottom: 1px solid var(--border);
    margin-bottom: 24px;
}

.tab {
    padding: 10px 18px;
    cursor: pointer;
    border-bottom: 2px solid transparent;
    margin-bottom: -1px;
    font-weight: 500;
    font-size: 13px;
    color: var(--text-muted);
    transition: all 0.15s;
}

.tab:hover { color: var(--text-secondary); }
.tab.active { color: var(--primary); border-bottom-color: var(--primary); }

/* Image grid */
.image-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 16px;
}

.image-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: all 0.2s;
    box-shadow: var(--shadow-sm);
}

.image-card:hover {
    box-shadow: var(--shadow-md);
    border-color: #d1d5db;
    transform: translateY(-2px);
}

.image-card img {
    width: 100%;
    height: 160px;
    object-fit: cover;
}

.image-card .image-info {
    padding: 8px 12px;
    font-size: 12px;
}

.image-card .image-actions {
    padding: 6px 12px;
    display: flex;
    gap: 6px;
    border-top: 1px solid var(--border);
}

/* Image browse page */
.image-product-group {
    margin-bottom: 20px;
}

.image-product-header {
    padding: 8px 0;
    border-bottom: 1px solid var(--border);
    margin-bottom: 10px;
    font-size: 13px;
}

.image-product-header a {
    font-weight: 600;
    color: var(--primary);
}

.image-browse-grid {
    /* groups stack vertically */
}

/* File upload area */
.upload-area {
    border: 2px dashed #d1d5db;
    border-radius: var(--radius-lg);
    padding: 40px;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s;
    margin-bottom: 20px;
    background: #fafbfc;
    color: var(--text-muted);
}

.upload-area:hover, .upload-area.dragover {
    border-color: var(--primary);
    background: var(--primary-light);
    color: var(--primary);
}

/* Modal */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.4);
    backdrop-filter: blur(6px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    animation: fadeOverlay 0.15s ease;
}

@keyframes fadeOverlay {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal {
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    padding: 28px;
    min-width: 420px;
    max-width: 620px;
    max-height: 80vh;
    overflow-y: auto;
    box-shadow: 0 25px 50px -12px rgba(0,0,0,0.15);
    border: 1px solid var(--border);
    animation: slideModal 0.2s ease;
}

@keyframes slideModal {
    from { opacity: 0; transform: scale(0.97) translateY(8px); }
    to { opacity: 1; transform: scale(1) translateY(0); }
}

.modal h2 {
    margin-bottom: 18px;
    font-size: 17px;
    font-weight: 600;
    letter-spacing: -0.01em;
}

.modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: 8px;
    margin-top: 20px;
}

/* Toast notifications */
#toast-container {
    position: fixed;
    top: 16px;
    right: 16px;
    z-index: 2000;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.toast {
    padding: 12px 18px;
    border-radius: var(--radius);
    color: #fff;
    font-size: 13px;
    font-weight: 500;
    box-shadow: var(--shadow-lg);
    animation: slideIn 0.25s ease;
    max-width: 380px;
}

.toast-success { background: linear-gradient(135deg, var(--success), #059669); }
.toast-error { background: linear-gradient(135deg, var(--danger), #dc2626); }
.toast-info { background: linear-gradient(135deg, var(--primary), #6366f1); }

@keyframes slideIn {
    from { transform: translateX(100px); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

/* Stats cards */
.stats-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 12px;
    margin-bottom: 20px;
}

.stat-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 18px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    position: relative;
    overflow: hidden;
    transition: transform 0.15s, box-shadow 0.15s;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), #818cf8);
    opacity: 0;
    transition: opacity 0.2s;
}

.stat-card:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.stat-card:hover::before {
    opacity: 1;
}

.stat-card .stat-value {
    font-size: 26px;
    font-weight: 700;
    color: var(--primary);
    letter-spacing: -0.02em;
}

.stat-card .stat-label {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 4px;
}

/* Column picker */
.column-picker {
    display: flex;
    flex-wrap: wrap;
    gap: 0;
    padding: 8px;
}

.column-picker label {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    font-size: 13px;
    padding: 3px 12px 3px 0;
    cursor: pointer;
    width: 200px;
}

.column-picker label:hover {
    color: var(--primary);
}

.column-picker label:hover {
    background: var(--bg);
}

/* Column picker — selected items reorder list */
.cpick-selected {
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 4px;
    min-height: 36px;
}

.cpick-selected-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 5px 8px;
    border: 1px solid #eee;
    border-radius: 3px;
    margin-bottom: 2px;
    background: #fff;
    font-size: 13px;
    cursor: grab;
}

.cpick-selected-item:hover {
    background: #f8f9fa;
}

.cpick-handle {
    color: #ccc;
    font-size: 11px;
    cursor: grab;
}

.cpick-name {
    flex: 1;
}

.cpick-up, .cpick-down, .cpick-remove {
    background: none;
    border: 1px solid #e0e0e0;
    border-radius: 3px;
    width: 22px;
    height: 22px;
    font-size: 10px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #999;
    padding: 0;
}

.cpick-up:hover:not(:disabled), .cpick-down:hover:not(:disabled) {
    background: #f0f0f0;
    color: #333;
}

.cpick-up:disabled, .cpick-down:disabled {
    opacity: 0.3;
    cursor: default;
}

.cpick-remove {
    color: var(--danger);
    font-size: 14px;
    font-weight: bold;
}

.cpick-remove:hover {
    background: #fde8e8;
}

/* Product detail — clean layout */
.detail-section {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    margin-bottom: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.detail-section .section-title {
    font-size: 11.5px;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 600;
    padding: 12px 20px;
    background: #fafbfc;
    border-bottom: 1px solid var(--border-light);
    margin: 0;
}

.detail-table {
    width: 100%;
}

.detail-row {
    display: flex;
    border-bottom: 1px solid var(--border-light);
    min-height: 40px;
}

.detail-row:last-child {
    border-bottom: none;
}

.detail-row:hover {
    background: #fafbfe;
}

/* Inherited properties (from parent) */
.inherited-row .detail-value {
    color: var(--text-muted);
    font-style: italic;
}

.inherited-value {
    display: inline;
}

.inherited-badge {
    display: inline-block;
    font-size: 10px;
    font-style: normal;
    font-weight: 500;
    color: #8b5cf6;
    background: #f5f3ff;
    padding: 1px 6px;
    border-radius: 10px;
    margin-left: 6px;
    vertical-align: middle;
}

.detail-label {
    width: 200px;
    min-width: 200px;
    padding: 10px 20px;
    font-weight: 500;
    font-size: 12.5px;
    color: var(--text-muted);
    background: #fafbfc;
    border-right: 1px solid var(--border-light);
    display: flex;
    align-items: flex-start;
}

.detail-value {
    flex: 1;
    padding: 10px 20px;
    font-size: 13px;
    line-height: 1.5;
    word-break: break-word;
}

.detail-edit {
    width: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.edit-prop-btn {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 14px;
    color: var(--text-muted);
    padding: 4px 6px;
    border-radius: 4px;
    opacity: 0;
    transition: all 0.15s;
}

.detail-row:hover .edit-prop-btn {
    opacity: 1;
}

.edit-prop-btn:hover {
    background: var(--primary-light);
    color: var(--primary);
}

.editable-title {
    cursor: pointer;
    border-radius: 4px;
    padding: 2px 6px;
    margin: -2px -6px;
    transition: background 0.15s;
}

.editable-title:hover {
    background: var(--primary-light);
}

.editable-sku {
    cursor: pointer;
    padding: 1px 4px;
    border-radius: 3px;
    transition: background 0.15s;
}

.editable-sku:hover {
    background: var(--primary-light);
}

/* Multi-value list (Shopify Tags, etc.) */
.multi-value-list {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.multi-value-item {
    font-size: 13px;
    line-height: 1.6;
}

/* Image thumbnails in property values */
.prop-thumbnail {
    display: flex;
    align-items: center;
    gap: 12px;
}

.prop-thumb-img {
    width: 80px;
    height: 80px;
    object-fit: cover;
    border: 1px solid var(--border);
    border-radius: 4px;
    cursor: pointer;
    transition: box-shadow 0.2s;
}

.prop-thumb-img:hover {
    box-shadow: 0 2px 8px rgba(0,0,0,0.15);
}

.prop-thumb-meta {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.prop-thumb-meta .thumb-link {
    font-size: 12px;
    color: var(--primary);
}

.prop-thumb-meta .thumb-dims {
    font-size: 11px;
    color: var(--text-muted);
    font-family: monospace;
}

/* Long text values (romance copy, body html) */
.prop-longtext {
    max-height: 200px;
    overflow-y: auto;
    white-space: pre-wrap;
    font-size: 13px;
    line-height: 1.6;
    padding: 4px 0;
    color: #555;
}

/* Row action menu */
.row-actions-cell {
    width: 50px;
    text-align: center;
    position: relative;
}

.row-actions-menu {
    position: relative;
    display: inline-block;
}

.row-actions-btn {
    background: none;
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 18px;
    color: var(--text-muted);
    padding: 2px 8px;
    line-height: 1;
}

.row-actions-btn:hover {
    background: var(--bg);
    border-color: var(--border);
    color: var(--text);
}

.row-actions-dropdown {
    display: none;
    position: absolute;
    right: 0;
    top: 100%;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-md);
    z-index: 50;
    min-width: 130px;
    overflow: hidden;
}

.row-actions-dropdown.open {
    display: block;
}

.row-actions-dropdown a,
.row-actions-dropdown button {
    display: block;
    width: 100%;
    padding: 8px 14px;
    text-align: left;
    font-size: 13px;
    border: none;
    background: none;
    cursor: pointer;
    color: var(--text);
    text-decoration: none;
}

.row-actions-dropdown a:hover,
.row-actions-dropdown button:hover {
    background: var(--bg);
}

.row-actions-dropdown .row-action-delete {
    color: var(--danger);
}

/* Bulk action bar */
.bulk-bar {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 16px;
    background: var(--primary-light);
    border: 1px solid var(--primary);
    border-radius: var(--radius);
    margin-bottom: 12px;
    font-size: 13px;
    color: var(--primary);
}

/* Level toggle (Parent / Variant / All) */
.level-toggle {
    display: flex;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    overflow: hidden;
    flex-shrink: 0;
    background: #fff;
}

.level-btn {
    padding: 6px 14px;
    border: none;
    background: transparent;
    font-size: 12.5px;
    font-weight: 500;
    cursor: pointer;
    color: var(--text-muted);
    border-right: 1px solid var(--border);
    transition: all 0.15s;
}

.level-btn:last-child {
    border-right: none;
}

.level-btn.active {
    background: var(--primary);
    color: #fff;
    box-shadow: 0 1px 3px rgba(79,110,247,0.3);
}

.level-btn:hover:not(.active) {
    background: var(--bg);
    color: var(--text-secondary);
}

/* Filter panel */
.filter-panel {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 16px;
    margin-bottom: 16px;
    box-shadow: var(--shadow-sm);
}

.filter-row {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
    flex-wrap: wrap;
}

.filter-row select, .filter-row input {
    padding: 6px 10px;
    border: 1px solid var(--border);
    border-radius: 4px;
    font-size: 13px;
}

.filter-row select {
    min-width: 160px;
}

.filter-row input {
    min-width: 180px;
}

.filter-tag {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 10px;
    background: var(--primary-light);
    border-radius: 20px;
    font-size: 12px;
    color: var(--primary);
    font-weight: 500;
}

.filter-tag .remove-filter {
    cursor: pointer;
    font-weight: bold;
    margin-left: 4px;
}

/* Column picker — two-panel layout */
.colpick-container {
    display: flex;
    gap: 16px;
    min-height: 400px;
}

.colpick-left {
    flex: 1;
    max-height: 450px;
    overflow-y: auto;
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 8px;
}

.colpick-search input {
    width: 100%;
    padding: 6px 10px;
    border: 1px solid var(--border);
    border-radius: 4px;
    font-size: 13px;
    margin-bottom: 8px;
}

.colpick-group h4 {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
    margin: 10px 0 4px;
    padding-top: 6px;
    border-top: 1px solid #f0f0f0;
}

.colpick-group:first-of-type h4 {
    border-top: none;
    margin-top: 0;
}

.colpick-item {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 3px 4px;
    font-size: 13px;
    cursor: pointer;
    border-radius: 3px;
}

.colpick-item:hover {
    background: var(--bg);
}

.colpick-right {
    width: 280px;
    min-width: 280px;
}

.colpick-right-list {
    max-height: 420px;
    overflow-y: auto;
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 4px;
}

.colpick-selected-item {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 8px;
    border: 1px solid #eee;
    border-radius: 4px;
    margin-bottom: 3px;
    background: #fff;
    font-size: 13px;
    cursor: grab;
    transition: background 0.15s;
}

.colpick-selected-item:hover {
    background: #f8f9fa;
}

.colpick-selected-item.dragging {
    opacity: 0.4;
}

.colpick-selected-item.drag-over {
    border-color: var(--primary);
    background: #eef3ff;
}

.colpick-drag-handle {
    color: var(--text-muted);
    font-size: 12px;
    cursor: grab;
    user-select: none;
}

.colpick-selected-name {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.colpick-selected-actions {
    display: flex;
    gap: 2px;
    flex-shrink: 0;
}

.colpick-selected-actions button {
    background: none;
    border: 1px solid var(--border);
    border-radius: 3px;
    width: 22px;
    height: 22px;
    font-size: 10px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    padding: 0;
}

.colpick-selected-actions button:hover:not(:disabled) {
    background: var(--bg);
    color: var(--text);
}

.colpick-selected-actions button:disabled {
    opacity: 0.3;
    cursor: default;
}

.colpick-selected-actions .colpick-remove {
    color: var(--danger);
    font-size: 14px;
    font-weight: bold;
}

/* Legacy property groups (kept for properties admin page) */
.prop-group { margin-bottom: 20px; }
.prop-group h3 { font-size: 14px; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.5px; margin-bottom: 8px; padding-bottom: 4px; border-bottom: 1px solid var(--border); }
.prop-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 8px; }
.prop-item { display: flex; align-items: baseline; gap: 8px; padding: 4px 0; }
.prop-item .prop-label { font-weight: 600; font-size: 12px; color: var(--text-muted); min-width: 120px; flex-shrink: 0; }
.prop-item .prop-value { font-size: 13px; }

/* Loading spinner */
.spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.loading-center {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 60px;
    gap: 12px;
    color: var(--text-muted);
    font-size: 13px;
}

.spinner {
    border-top-color: var(--primary) !important;
    width: 24px !important;
    height: 24px !important;
}

/* Catalog cards (list page) */
.catalog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 16px;
}

.catalog-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 16px;
    transition: box-shadow 0.2s;
}

.catalog-card:hover {
    box-shadow: 0 2px 12px rgba(0,0,0,0.08);
}

.catalog-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 8px;
}

.catalog-card-header h3 {
    font-size: 16px;
    margin: 0;
}

.catalog-card-header h3 a {
    color: var(--text);
    text-decoration: none;
}

.catalog-card-header h3 a:hover {
    color: var(--primary);
}

.catalog-card-actions {
    display: flex;
    gap: 4px;
    flex-shrink: 0;
}

.catalog-card-desc {
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: 8px;
}

.catalog-card-meta {
    display: flex;
    gap: 12px;
    font-size: 11px;
    color: var(--text-muted);
    margin-bottom: 12px;
}

.catalog-card-footer {
    display: flex;
    gap: 8px;
    border-top: 1px solid var(--border);
    padding-top: 12px;
}

/* Catalog view — Grid layout */
.catalog-grid-view {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 16px;
}

.catalog-product-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 6px;
    overflow: hidden;
}

.catalog-card-img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-bottom: 1px solid var(--border);
}

.catalog-card-body {
    padding: 12px;
}

.catalog-card-sku a {
    font-weight: 600;
    font-size: 13px;
    color: var(--primary);
}

.catalog-card-name {
    font-size: 14px;
    margin: 4px 0 8px;
}

.catalog-card-props {
    font-size: 12px;
}

.catalog-prop-row {
    display: flex;
    justify-content: space-between;
    padding: 2px 0;
    border-bottom: 1px solid #f5f5f5;
}

.catalog-prop-label {
    color: var(--text-muted);
    margin-right: 8px;
}

.catalog-thumb {
    width: 48px;
    height: 48px;
    object-fit: cover;
    border-radius: 3px;
    border: 1px solid var(--border);
}

/* Catalog view — Linesheet layout */
.catalog-linesheet {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 12px;
}

.linesheet-item {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 4px;
    overflow: hidden;
    font-size: 12px;
}

.linesheet-img {
    width: 100%;
    height: 140px;
    object-fit: cover;
    border-bottom: 1px solid var(--border);
}

.linesheet-img-empty {
    width: 100%;
    height: 80px;
    background: #f9f9f9;
}

.linesheet-info {
    padding: 8px;
}

.linesheet-sku a {
    font-weight: 700;
    font-size: 12px;
    color: var(--primary);
}

.linesheet-name {
    font-size: 11px;
    color: var(--text-muted);
    margin: 2px 0 4px;
}

.linesheet-prop {
    font-size: 11px;
    color: var(--text-muted);
    line-height: 1.5;
}

/* Empty states */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-muted);
}

.empty-state-icon {
    font-size: 48px;
    margin-bottom: 16px;
    opacity: 0.3;
}

.empty-state h3 {
    font-size: 16px;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.empty-state p {
    font-size: 13px;
    max-width: 400px;
    margin: 0 auto 16px;
}

/* Row hover highlight */
.data-table tbody tr {
    cursor: default;
}

.data-table a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
}

.data-table a:hover {
    text-decoration: underline;
}

/* Responsive */
@media (max-width: 768px) {
    .topbar { padding: 0 12px; }
    .topbar-logo { height: 20px; }
    .nav-links li a { padding: 8px 8px; font-size: 12px; }
    .content { padding: 12px; }
    #user-name { display: none; }
}